Exploring territory quality in the North American red squirrel through removal experiments
Exploring territory quality in the North American red squirrel through removal experiments
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通过去除实验探索北美红松鼠的领地质量
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
S. Boutin
中科院分区：
文献类型：
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作者：
K. Larsen;S. Boutin
如果领地质量影响其所有者的适应性，那么如果有机会占用更高质量的领地，相对不成功的个体就应该重新安置。然而，这些动物的迁移可能会因栖息地饱和、竞争能力差或迁移成本而受到阻碍。我们进行了两项迁移研究，在北美红松鼠（Tamiasciurus hudsonicus）种群中创造了大量领地空缺，从而为迁移提供了有利条件。在这两个实验中，我们测试了非繁殖雌性是否比繁殖雌性更有可能重新安置，大概是因为它们（非繁殖者）占据了质量相对较差的领地。在我们的第一个实验中，我们永久地将大部分松鼠从研究地点移走，并监测迁移后剩余的非繁殖和繁殖雌性松鼠的相对比例。在我们的第二个实验中，我们监测了松鼠对先前空置领土的反应......
If territory quality affects the fitness of its holder, then relatively unsuccessful individuals should relocate if given the opportunity to appropriate a higher quality territory. Relocation by these animals, however, may be prevented by habitat saturation, poor competitive ability, or the costs of relocating. We conducted two removal studies that created numerous territory vacancies in a population of the North American red squirrel (Tamiasciurus hudsonicus), thus providing favourable conditions for relocation. In both experiments, we tested whether nonbreeding females were more likely to relocate than breeding females, presumably because they (the nonbreeders) occupied relatively poor-quality territories. In our first experiment we permanently removed most of the squirrels from a study site and monitored the relative proportions of the remaining nonbreeding and breeding females that relocated. In our second experiment we monitored the response of squirrels to vacant territories that had been previously...